Tubular saw



Sept. 1?}1923 J. L. WALKER TUBULAR SAW Original Fild Dec. 419. 1922 WHI Patented Sept. 11, 1923.

UNITED STATES I ane JOSEPH L. WALKER, 0F BATON ROUGE, LOUISIANA, ASSIGNOR T0 K-D BARREL & HAMPER ('10., OF BATON ROUGE, LOUISIANA.

TUBULAR SAW.

Original application filed December 19, 1922, Serial No. 607,827. Divided and this application filed.

January 25, 1923.

T 0 all wlz am it may concern:

Be it known that I, JOSEPH L. WALKER, a citizen of the United States, residing at Baton Rouge, in the parish of East Baton Rouge and State of Louisiana, have invented a new and useful Tubular Saw, of which the following is a specification.

This invention relates to cutter heads for use primarily in manufacturing barrel heads and similar articles, and it is more especially a division of my co-pending application for patent on machine for making barrel heads, filed Dec. 19th, 1922, Serial Number 607,827.

One of the objects of the invention is to provide a rotary cutter head utilizing an ordinary saw blade.

Another object is to provide adjustable means for engaging the blade whereby adjustment to compensate for wear can be effected.

l/Vith the foregoing and other objects in view which will appear as the description proceeds, the invention consists of certain novel details of construction and combinations of parts which will be hereinafter more fully described and pointed out in the claim, it being understood that various changes may be made in the construction and arrangement of the parts without departing from the spirit or sacrificing any of the advantages of the invention as claimed.

In the accompanying drawings the preferred form of the invention has been shown.

In said drawings- Figure 1 is a horizontal section through the saw, the cutter head being shown in bottom plan, the section being on the line 1-1, Figure 2.

Figure 2 is an enlarged section on line 2-2, Figure 1.

Figure 3 is a section similar to Figure 2, showing the abutment ring reversed.

Referring to the figures by characters of reference, 31 designates a hollow cylindrical head within which is removably seated an abutment ring 32 adapted to be engaged by Serial No. 614,889.

one edge of a saw blade 33. This blade has teeth 34 on its other edge and is made of a flexible sheet of steel .cut to properlength and adapted to be bent to circular form with its ends abutting, as shown at 35. The blade is so proportioned that when it is formed into a circle it will fit snugly within the cutter head, 31. A split holding ring 36 preferably formed of spring metal, is adapted to be contracted and inserted into the cutter head and against the abutment ring. It is then allowed to expand and will bind tightly against the blade 33 so as to hold it in frictional engagement with the inner surface of the cutter head. In Figures 2 and 3 the abutment ring has been shown provided with an annular groove 37. When the blade is first placed in the cutter head the abutment ring is located as shown in Figure 2 so that the inner edge of the blade will be seated in the groove 37. As the blade wears down through constant or long continued use, however, the ring 32 can be removed and reversed as shown in Figure 3. Thus the worn blade can be held projected a sufficient distance beyond the cutter head to permit more continued use than would otherwise be possible.

lVhat is claimed is The combination with a hollow cutter head, of a reversible abutment ring Within the cutter head having an annular groove, a saw blade bent to circularform and fitted within and extendingfrom the cutter head, said blade being seated at one edge within the grooved abutment ring, and an expansible ring surrounded by the blade for clamping the blade against the cutter head.

In testimony that I claim the foregoing as my own, I have hereto afiixed my signature in the presence of two witnesses.

M. L. CRoss. T. LOUIS Cross. 

